<!DOCTYPE html>
<html lang="zh">
<style>
    body {
        min-height: 100vh;
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
    }
</style>
<head>
    <meta charset="UTF-8">
    <title>登陆</title>
</head>
<body>
<form action="/login" method="post">
    <label>
        用户名:
        <input type="text" name="aa"/>
    </label>
    <br><br>
    <label>
        密码:
        <input type="password" name="bb"/>
    </label>
    <br><br>
    <label>
        <input type="submit" value="登陆">
    </label>
</form>
</body>
</html>